612507613 has 2 divisors, whose sum is σ = 612507614. Its totient is φ = 612507612.

The previous prime is 612507607. The next prime is 612507629. The reversal of 612507613 is 316705216.

612507613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563255289 + 49252324 = 23733^2 + 7018^2 .

It is a cyclic number.

It is not a de Polignac number, because 612507613 - 2²¹ = 610410461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612547613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306253806 + 306253807.

It is an arithmetic number, because the mean of its divisors is an integer number (306253807).

Almost surely, 2^612507613 is an apocalyptic number.

It is an amenable number.

612507613 is a deficient number, since it is larger than the sum of its proper divisors (1).

612507613 is an equidigital number, since it uses as much as digits as its factorization.

612507613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 612507613 is about 24748.8911468777. The cubic root of 612507613 is about 849.2531446573.

The spelling of 612507613 in words is "six hundred twelve million, five hundred seven thousand, six hundred thirteen".